#pragma once
#define SIZE 1024
#define flush_Now 1
#define flush_Line 2
#define flush_All 4
#include <string.h>
typedef struct IO_FILE{
  int fileno;
  int flag;
  int out_size;
  char out_buffer[SIZE];
}_FILE;


_FILE *_fopen(const char *filename, const char *flag);
int _fwrite(_FILE*fp,const char *s,int len);
void _fclose(_FILE*fp);
